Lock.



P. ZAPPILE.

LOCK.

APPLICATION FILED MAY 191s.

Patented'May 26, 1914.

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P. ZAPPILE.

LOCK.

APPLIOATION FILED MAY 6, 1913.

Patented IMay 26, 1914.

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J @Eroi/wuts PAOLO ZAPPILE, 0F NEW YORK, N. Y.

LOCK.

Specification of Letters Patent.

Patented May 26, 1914.

Application filed May 6, 1913. Serial No. 765,865.

To all whom it may concern.'

Be it known that I, IAoLo ZArriLn, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain n ew and useful Improvements in Locks, of which the following is a specification.

My invention relates to locks and latches and particularly to that class of locks wherein there is a plurality of locking bolts, all thrown simultaneosuly by one locking operation.

The primary object of my invention is to provide a very simple and effective form of lock provided with a plurality of locking bolts, the projection or retraction of these locking bolts being effected by the turning of a key in the lock.

A further object of the invention is to provide means for latching the bolts in their projected position, this latching means being thrown out of operative engagement with the bolts by means of a key and necessitating the use of a key for releasing the latching means before the bolts may be retracted, thus preventing the picking of the lock or the operation of 'the lock without the use of a proper form of key.

Another object of the invention is to provide a lock in which the bolts may be projected or retracted to a greater or less degree as desired by rot-ating the key a number of times.

Other objects will appear in the course of the following description,

My invention is illustrated in the accompanying drawings wherein:

Figure 1 is a face view of a door and door casing provided with my improved lock. Fig. 2 is a longitudinal sectional View of the lock casing, the interior part being shown in elevation. Fig. 3 is an elevation of the rear face of the lock. Fig. 4 is a section on the line 1 -4c of Fig. 3. Fig. 5 is a perspective view of a part of the key.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawings by the same reference characters.

Referring to these drawings, A designates a door and B the door casing. This door may be the door of a safe, of an apartment or of any other structure. As illustrated, the door is hinged on one edge and the door casing is provided with a plurality of keepers designated 2 and designed to be engaged by the locking bolts.

Mounted upon the face of the door or disposed in a recess cut in the door if desired is the lock casing designated 4f. This lock casing comprises the outer plate 5 and the inner plate 6 spaced from each other,the casing being closed at its ends and provided with a face plate 7.

Passing through the center of the casing and rotatably mounted therein is a spindle or shaft 8. Extending longitudinally of the casing and mounted upon the inner face of the plate 6 is a bridgey plate designated 9. The ends of this bridge plate are transversely extended as at 10 and 11 and the extremities of the bridge plate are provided With outwardly extending feet 12 whereby the bridge plate is supported in spaced relation upon the face of the plate 6.

Resting upon the bridge plate and mounted upon the shaft 8 is a sector gear 13. This gear has a smooth curved edge for the greater portion of its circumference as at 14 but is provided at one portion of its circumference with radially projecting teeth 15. The smooth edge 14 is provided with a plurality of notches 16.

Slidingly mounted upon the spindle or shaft 8 and resting upon the face of the gear whel 13 is a spring actuating member 17. The extremity of the member 17 is reduced as at 18 and passes through a guide 19 mounted upon the face of the bridge plate 9. The end portion 10 of the bridge plate is provided with the upwardly projecting lug 20 and attached to this lug is one end of a spring 21, this spring being bent in a semicircle and its free end being perforated for the passage of the reduced portion 18 of the member 17. The free end of the spring is formed with a tooth 22 adapted to engage in the notches 16 formed in the gear wheel 13.

Mounted on the spindle 8 below the bridge plate 9 is a toothed gear 23 whose teeth mesh with a pair of longitudinally extending bolts 24: and 25, the bolts being disposed on diametrically opposite sides of the gear wheel 23. These bolts are guided in guides 26 and project out of the lock casing as illustrated in Fig. 1 and are adapted to engage withy the keepers 2. It will be obvious that when the shaft 8 is turned in one direction, these bolts will be retracted and that when turned in the opposite direction the bolts will be projected and that furthermore the more the shaft or spindle 8 is rotated in one or the other direction, the greater will be the retraction or projection of the bolts.

Disposed upon the outer face of the plate 6 and attached to the shaft 8 is a toothed gear wheel 27. Extending longitudinally of the plate and supporting the extremity of the shaft is a bridge piece 28 which is spaced from the plate so as to accommodate the gear wheel 27 beneath it. The teeth of the gear wheel 27 mesh with teeth formed upon a bolt 29 which moves laterally across the plate. rl`his bolt shifts through a guide 30, this guide being provided with a slot 31 through which passes a pin 32 on the bolt. The bolt of course passes through the face plate 7 of the lock casing. The inner ends of the bolts 24e and 25 are preferably provided with stops 33 for limiting the projection of the bolts.

The face plate 5 is provided with a key opening 34 as is the adjacent end of the bridge plate 9. Disposed upon the bridge plate 9 and adjacent said key opening is a ward 35. The key opening 34C has' of course the same shape as the bit of the key. As illustrated, the key 36 has a hook-shaped bit 37 so as to present a rounded face 3S, the bit being cleft as at 39 so as to pass the ward 35.

The operation of the lock is obvious. Assuming that the bolts are in their retracted position, then it is obvious that upon an introduction of the key into the keyhole 34 and a rotation of the key in the direction of the arrow, the rounded face 38 will engage the rounded edge of the shiftable member 17. This will compress the spring 21 and lift the tooth 22 from the notch 16. A further rotation of the key will cause the bit to engage between two of the teeth 15 and cause a rotation of the wheel 13 and of shaft S. rlhis of course will cause a rotation of the gear wheels 23 and 27 and thus a projection of the bolts 24, 25 and 29. The bolts will be projected only a certain distance upon one rotation of the key but a second rotation of the key will cause a still farther projection of the bolts and the bolts may be projected still farther upon a third rotation of the key. It is obvious that a reverse rotation of the key will reversely act to rotate the gear wheel 13 and thus rotate the gear wheels 23 and 27 and thus cause a retraction of the bolts. Of course it will require as many rotations of the key to retract the belts as was used to project the bolts.

1t will be noted that there is an advantage in so forming the lock that it will require a plurality of rotations of the key before the bolts will be fully retracted for the reason that even if an unauthorized person'has e. key which will operate the lock, yet after one turn has been made and no apparent result has been secured, they will imagine that the key does not operate the lock and will desist from the attempt, or will reverse the movement of the key, of course throwing the bolt back to its original posit-ion. It is obvious that the lock may be so constructed that it will require quite a number of rotations of the key to fully throw the bolts, this number being known to the authorized user of the proper key but not to an unauthorized person meddling with the lock.

While 1 have illustrated what I believe to be the best form of my invention, I do not wish to be limited to this as many changes might be made without departing from the spirit thereof.

That I claim is:

1. A lock including a shaft, a toothed gear on the shaft, a sliding bolt engaged by said toothed gear, a toothed wheel en the shaft, the teeth of which are adapted to be engaged by a key to rotate the wheel, a latch preventing the rotation of said wheel, and a key actuated member adapted to raise said latch when engaged by the key to permit the shifting of the bolts.

2. A lock including a shaft, a toothed gear on the shaft, a sliding bolt engaged by said toothed gear, a wheel on the shaft having teeth along a portion of its circumference, the plain portion lof the wheel being formed with a notch, a spring latch engaging said notch to prevent a rotation of the wheel, a sliding member engaging the free end of the spring to lift the latch and extending into proximity to the teeth on the wheel, and a key adapted to lift said sliding member to release the latch and engaging said teeth to lift the latch and shift the bolt.

3. A lock including a shaft, a pair of toothed gears on the shaft, a plurality of toothed locking bolts engaged by said toothed gears and shiftable by a rotation of the gears, a member mounted upon the shaft and having teeth adapted to be engaged by a key to rotate the shaft, means for locking said member from rotation, and key operated means for releasing the locking means to permit the rotation of said locking member. j

4. A lock of the character described including a casing, a shaft extending through the casing, a toothed gear wheel mounted upon the shaft, parallel oppositely disposed toothed ,sliding bolts engaged by said wheel and adapted to be shifted in opposite directions by a rotation of the wheel in one direction', a member mounted upon the shaft and having key engaging teeth, a spring actuated locking member normally preventing a rotation of ythe shaft, and key actuated means for releasing said locking member.

5. A lock including a lock casing, a shaft passing through the lock CasinOt a toothed v o gear mounted on the shaft on one side of said lock casing, a transversely extending toothed bolt engaged by said gear, a gear disposed Within the lock casing, vertically movable bolts engaged With opposite sides of said gear, a disk mounted upon the shaft Within the lock casing and having a plurality of teeth adapted to be engaged by a key, a spring actuated detent engaging said Wheel and acting to prevent its rotation, and a sliding member supported upon the shaft engaging at one end With said detent and having its other end disposed in proximity to the teeth on said disk and being adapted to be engaged by a key to Withdraw the latch and permit the key to rotate said disk and shaft. f

6. A lock of the character described including alock casing, one of the side plates of which is formed with a keyhole, a bridge plate extending longitudinally of the casing, a shaft passing through the side plate and the bridge plate, a toothed gear upon the outer faoe of the plate and connected to said shaft, a transversely extending toothed bolt engaged by said gear, -a toothed gear mounted on the shaft and disposed interiorly of the casing, parallel, oppositely extending toothed bolts engaged by said gear and mounted for sliding movement in the casing, a disk mounted upon said shaft and upon the face of the bridge plate, said disk having radially projecting teeth extending toward the keyhole, a spring mounted upon the bridge plate and having a detent at its end engaging a notch in said disk, a sliding member mounted upon the outer face of the disk, one end engaging the detent and the vother being disposed in proximity to the teeth to be thereby engaged by a key to shift the detent and permit the key to rotate the disk to thereby rotate the shaft and shift the bolts.

In testimony whereof I affix my signature in presence of two Witnesses.

Y PAOLOy ZAPPILE. [L s] Witnesses: Y

ANTONIO BIBBo, GIUSEPPE PERRONE..

Copies of this patent may be obtanedior ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

